[enit] fix hanging on stop

Summary: related to https://crm.tpip.net/issues/3417

Test Plan: it works, see documentation for permanent

Reviewers: aschultz, hsychla

Reviewed By: aschultz, hsychla

Subscribers: hsychla, aschultz, druss, mkraemer

Differential Revision: https://review.tpip.net/D1851